Brake Swap

[AccordinglyCB7]

Hey,

I did some searching on here and couldn't really find what I was looking for but I would like to do rear discs and I would like to get them from a simliar year prelude so I would just swap the whole set over. I was just wondering if there was anyone who has done this and are there any problems I would run into that would make it impossible for it to work. I am pretty sure that prelude is a 4 lug just cause I want to keep my wheels and hopefully not have to do too much fabrication.

Thanks

[Jarrett]

You don't have to do any fabrication if you use the rear knuckles, calipers and rotors from a '90-'93 Accord that came with rear discs. The Prelude rear knuckles simply will not fit.

[ts14]

I did a 96 exr rear end swap on mine. She bolts right up

[Jarrett]

And unless you have a '91-'93 wagon, it's dimensionally wrong. The control arms are spaced apart by an additional 50mm on the later model Accords and wagons via the with of the knuckle and crossmember. If you change the width of the knuckle and not the crossmember then your suspension is not moving freely like it should. You'll wer bushings VERY quickly that way.

[deevergote]

You have a 91, so a "similar year Prelude" wouldn't even work. Those are the 3rd gen Preludes... 4x100 bolt pattern.

If you want rear discs, get rear discs from a 92-93 EX. Don't go messing with brakes from other cars. Brake balance is important, and if you end up getting larger rotors and/or stronger calipers in the rear, you'll be increasing your risk of spinning out... as if you just yanked on the e-brake to stop. You don't want to increase braking power in the rear without doing so in an equal manner in the front.

Also, you should get a 40/40 proportioning valve from an Integra (I forget the year and model, but you can find that by searching the various rear-disc swap DIY threads on this site.) Since you don't have ABS like the rear-disc-equipped models do, you'll need to use a prop valve made for a non-ABS vehicle with rear discs.